Badass Biker Names

Bobby is the quintessential mid-century nickname, the name of the son on Mad Men and overused to the point of cliche. Though Robert is still a highly popular choice, most Roberts today are called by their full name or Rob or Robbie rather than Bob or Bobby.

Bonnie is an adorable nickname name, heading back up the popularity list after a 50-year nap. A Top 100 girls' name throughout the rest of the English-speaking world, Americans are later to jump on the Bonnie bandwagon but now it's trending here too.

Clay is a rich, earthy one-syllable name with a southern-inflected handsome-rogue image, featured on soap operas and reality TV. Its longer forms are Clayton and Clayborne.

Even though in the past Clyde may have been identified as half of the infamous outlaw duo with partner Bonnie Parker—especially after the 1967 movie in which he was played by Warren Beatty—Clyde has always had an element of jazzy cool that could overcome all the rest.

Gemma is a jewel of a name, an Italian classic that was very popular in 1980s England, but has only recently been started to be used here; it entered the list in 2008.

Harry is the medieval English form of Henry, which derived from the Germanic name Heimrich, meaning "estate ruler." Harry was the nickname of all eight King Henrys; it is also a diminutive of Harold and Harrison.

Jax is the Dex-Jex-Pax type of x-ending cool -- possibly too cool -- variation of Jack or nickname for Jaxon or Jackson.

John reigned as the most popular of all boys' Christian names for 400 years, from the time the first Crusaders carried it back to Britain until the 1950s. Then American baby namers finally seemed to tire of this straight-arrow, almost anonymous John Doe of names, replacing it with fancier forms like Jonathan and the imported Sean and Ian.

Kip Thorne, nobel laureate and long-time colleague of Stephen Hawking, is just one of several Kips who don't have a longer name.

Scarlett Johansson is doing more for this sparky southern name than Scarlett O'Hara ever did. Since the turn of the 21st century, Scarlett has gone from an obscure literary name to one of the most popular girls' names starting with S, right after longtime favorites Sophia and Sofia.